Linear sound wave swing motor

Abstract

The utility model relates to a linear sound wave swing motor which comprises an upper cover, a lower cover, a rotor assembly and a stator assembly. The rotor assembly comprises two correspondingly arranged magnet fixing frames, the ends of the two magnet fixing frames are connected with an outer shaft, the ends, close to the outer shaft, of the two magnet fixing frames are provided with bearings, an elastic piece is embedded between the two magnet fixing frames, one end of the elastic piece is fixedly connected with the outer shaft in an inserted mode, and the other end of the elastic piece is provided with a bearing. One end of the elastic sheet is fixed on the lower cover and is positioned between the two magnet fixing frames through the two magnet fixing frames which are mutually inserted, the other end of the elastic sheet is fixed with the lower cover, a plurality of magnets which are consistent in magnetizing direction penetrate through the magnet fixing frames, the distribution direction of the plurality of magnets is perpendicular to the distribution direction of the two magnet fixing frames, and the outer side end surfaces of the magnet fixing frames are provided with magnetic conductive plates; and the rotor assembly swings back and forth along with the circumferential rotation of the bearing and the flexible deformation of the elastic sheet under the magnetic action of the stator assembly. The utility model has the advantages that the overall structural length of the motor is shortened, and the overall connection stability is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of motors, and in particular relates to a linear sonic wave swing motor. Background Art

[0002] The linear sonic oscillating motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque. It can be used as a power source for electrical appliances or various machines, such as the motor core of an electric toothbrush or electric comb. After the sonic motor is energized, under the control of the control circuit, the sonic motor cyclically moves to generate high-frequency vibrations, thereby driving the head of the electrical appliance to generate high-frequency vibrations.

[0003] In the rotor assembly of the existing linear sonic wave swing motor, the magnet fixing frame is an integral structure, one end of the magnet fixing frame is fixedly connected to the outer shaft and the end is connected to the bearing, and the other end of the magnet fixing frame is fixedly connected to the spring sheet, so the spring sheet, the magnet fixing frame and the outer shaft are connected to form a coaxially arranged linear structure. Therefore, the overall structural length of this phenomenon sonic wave swing motor is relatively large. This sonic wave motor is suitable for electric toothbrushes, but for products that require a short overall length, such as electric combs, this linear sonic wave swing motor with a large length is not suitable. If the magnet fixing frame is changed to a split structure, the overall structural length of the sonic wave swing motor can be shortened, but the connection stability between the magnet fixing frame, the spring sheet and the outer shaft cannot be guaranteed. Utility Model Content

[0004] The purpose of the utility model is to overcome the above disadvantages and provide a linear acoustic wave swing motor, which shortens the overall structural length of the motor while ensuring the overall connection stability.

[0005] The purpose of the utility model is achieved through the following technical solutions: A linear acoustic wave swing motor comprises an upper cover, a lower cover, a rotor assembly and a stator assembly;

[0006] The rotor assembly includes two correspondingly arranged magnet fixing frames, the ends of the two magnet fixing frames are connected to the outer shaft, the ends of the two magnet fixing frames close to the outer shaft are provided with bearings, a spring sheet is embedded between the two magnet fixing frames, one end of the spring sheet is plugged and fixed to the outer shaft, and the end of the spring sheet is positioned between the two magnet fixing frames through two mutually plugged magnet fixing frames, the other end of the spring sheet is fixed to the lower cover, and a plurality of magnets with the same magnetizing direction are provided through the magnet fixing frames, the distribution direction of the plurality of magnets is perpendicular to the distribution direction of the two magnet fixing frames, and the outer end surface of the magnet fixing frame is provided with a magnetic conductive plate; under the magnetic force of the stator assembly, the rotor assembly swings back and forth with the circumferential rotation of the bearing and the flexible deformation of the spring sheet.

[0007] A further improvement of the utility model is that: the end of the outer shaft close to the spring sheet has a groove for accommodating the insertion of the spring sheet, the end of the spring sheet close to the outer shaft has insertion holes on both sides, the upper ends of the two magnet fixing frames have upper plugging columns that are staggered and inserted into the two insertion holes, and the upper ends of the two magnet fixing frames have upper positioning holes for the corresponding upper plugging columns to pass through and insert, and the lower ends of the two magnet fixing frames have two groups of lower plugging columns and lower positioning holes that are plugged into each other.

[0008] A further improvement of the utility model is that the stator assembly includes a magnetizer, a U-shaped coil frame and a coil wound around the middle of the magnetizer, the U-shaped coil frame covers the rotor assembly, and a magnetizer plate is arranged corresponding to the coil.

[0009] A further improvement of the utility model is that the U-shaped coil frame and the magnetic conductor are combined and fixed by means of integral injection molding or embedding and then gluing.

[0010] A further improvement of the utility model is that: the upper and lower sides of the U-shaped coil frame are provided with bosses, the upper cover and the lower cover are provided with limiting holes corresponding to the bosses, and the limiting holes are transitionally matched with the bosses.

[0011] A further improvement of the utility model is that the two magnet fixing frames are movably connected to the upper cover via bearings.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model adopts two magnet fixing frames with a split structure to cover the spring sheet inside. The end of the spring sheet is directly plugged into the outer shaft, and the overall fixed connection is achieved through the two magnet fixing frames plugged into each other. At the same time, the bearing again limits and fixes the ends of the two magnet fixing frames and the outer shaft, shortening the length of the rotor assembly as a whole, thereby shortening the length of the linear acoustic wave swing motor as a whole. The utility model has wide applicability, ensures the connection stability between the rotor assembly and the outer shaft, and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a linear acoustic wave swing motor.

[0015] Figure 2 The utility model is a disassembled schematic diagram of a linear sonic oscillating motor.

[0016] Figure 3 It is a schematic diagram of the disassembly of the rotor assembly in the utility model.

[0017] Figure 4 This is a schematic diagram of the disassembly of the stator assembly in the present utility model.

[0018] Numbers in the figure:

[0019] 1-upper cover, 2-lower cover, 3-rotor assembly, 4-stator assembly, 5-limiting hole;

[0020] 31-magnet fixing frame, 32-external shaft, 33-bearing, 34-spring, 35-magnet, 36-magnetic plate, 37-slot, 38-jack, 39-upper plug post, 310-upper positioning hole, 311-lower plug post, 312-lower positioning hole;

[0021] 41 - magnetic conductor, 42 - U-shaped coil frame, 43 - coil, 44 - boss. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, it is necessary to understand that terms indicating orientation or positional relationships, such as orientation or positional relationships based on the drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In the present utility model, unless otherwise clearly stipulated and limited, terms such as "connected", "provided with", "having" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be said to be a mechanical connection, or it can be directly connected, or it can be connected through an intermediate medium. For those skilled in the art, the basic meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0025] A linear sonic oscillating motor, such as Figures 1 to 3 As shown, it includes an upper cover 1, a lower cover 2, a rotor assembly 3 and a stator assembly 4;

[0026] The rotor assembly 3 includes two correspondingly arranged magnet fixing frames 31, the ends of the two magnet fixing frames 31 are connected to the outer shaft 32, the ends of the two magnet fixing frames 31 close to the outer shaft 32 are provided with bearings 33, and a spring piece 34 is embedded between the two magnet fixing frames 31, one end of the spring piece 34 is plugged and fixed with the outer shaft 32, and the end of the spring piece 34 is positioned between the two magnet fixing frames 31 through two mutually plugged magnet fixing frames 31, and the other end of the spring piece 34 is fixed to the lower cover 2, and a plurality of magnets 35 with the same magnetizing direction are provided through the magnet fixing frames 31, and the distribution direction of the plurality of magnets 35 is perpendicular to the distribution direction of the two magnet fixing frames 31, and the outer end surface of the magnet fixing frame 31 is provided with a magnetic conductive plate 36; under the magnetic force of the stator assembly 4, the rotor assembly 3 swings back and forth with the circumferential rotation of the bearing 33 and the flexible deformation of the spring piece 34.

[0027] The utility model adopts two magnet fixing frames 31 of split structure to cover the spring piece 34 inside. The end of the spring piece 34 is directly plugged into the outer shaft 32, and the overall fixed connection is achieved through the two mutually plugged magnet fixing frames 31. At the same time, the bearing 33 again limits and fixes the ends of the two magnet fixing frames 31 and the outer shaft 32, shortening the length of the rotor assembly 3 as a whole, thereby shortening the length of the linear acoustic wave swing motor as a whole. The utility model has wide applicability, ensures the connection stability between the rotor assembly 3 and the outer shaft 32, and is easy to install.

[0028] In the present application, the magnetization directions of the multiple magnets 35 are consistent. When the multiple magnets 35 are continuously subjected to the magnetic field in the same direction, the magnetic materials inside the magnets 35 will be arranged in the same direction, and the magnets 35 will generate stronger magnetic energy.

[0029] The coil 43 and the corresponding magnetic plate 36 generate a force, thereby driving the swing of the magnet fixing frame 31 connected to the magnetic plate 36. Since the magnet fixing frame 31 has a bearing 33 at one end and a spring 34 at the other end, the rotor assembly 3 and the outer shaft 32 swing slightly left and right under the dual action of the bearing 33 and the spring 34. The rotor assembly 3 includes a plurality of magnets 35, each of which has a magnetic plate 36 above and below the magnet 35. The magnetic plate 36 is made of magnetic conductive material and plays a magnetic conductive role.

[0030] On the basis of this embodiment, the end of the outer shaft 32 close to the spring sheet 34 has a slot 37 for accommodating the insertion of the spring sheet 34, and the end of the spring sheet 34 close to the outer shaft 32 has insertion holes 38 on both sides, and the upper ends of the two magnet fixing frames 31 have upper plug posts 39 that are staggered and inserted into the two insertion holes 38, and the upper ends of the two magnet fixing frames 31 have upper positioning holes 310 for the corresponding upper plug posts 39 to pass through and insert, and the lower ends of the two magnet fixing frames 31 have two groups of lower plug posts 311 and lower positioning holes 312 that are plugged into each other.

[0031] During installation, one end of the spring piece 34 is embedded in the end of the outer shaft 32, and the two magnet fixing frames 31 are interlocked, so that the upper plug column 39 on the magnet fixing frame 31 passes through the corresponding plug hole 38 and is plugged into the corresponding upper positioning hole 310 on the other magnet fixing frame 31, and the lower plug column 311 is plugged into the lower positioning hole 312. The magnet 35 is placed in the magnet fixing frame 31, and the magnetic conductive plate 36 is fixed on both sides of the magnet fixing frame 31. The bearing 33 is sleeved on the ends of the two magnet fixing frames 31, and the installation of the rotor assembly 3 is completed. After positioning the stator assembly 4, the upper cover 1 and the lower cover 2 are engaged, and the overall installation of the linear acoustic wave swing motor is completed.

[0032] Based on this embodiment, Figure 4As shown, the stator assembly 4 includes a magnetizer 41, a U-shaped coil frame 42 and a coil 43 wound around the middle of the magnetizer 41. The U-shaped coil frame 42 covers the rotor assembly 3. A magnetizer plate 36 is arranged corresponding to the coil 43. The coil 43 is wound around the magnetizer 41. When the coil 43 is energized, an induced magnetic field is formed in the U-shaped space of the magnetizer 41.

[0033] On the basis of this embodiment, the U-shaped coil frame 42 and the magnetic conductor 41 are combined and fixed by integral injection molding or embedding and then gluing.

[0034] On the basis of this embodiment, the upper and lower sides of the U-shaped coil frame 42 are provided with bosses 44 , and the upper cover 1 and the lower cover 2 are provided with limiting holes 5 corresponding to the bosses 44 , and the limiting holes 5 are transitionally matched with the bosses 44 .

[0035] The upper and lower ends of the U-shaped coil frame 42 each have a boss 44, the number of which is 2 or more. The boss 44 and the limiting hole 5 are transitionally matched. During assembly, the boss 44 on the U-shaped coil frame 42 is inserted into the limiting hole 5 of the upper and lower covers 2 to play an assembly positioning role, thereby reducing the assembly cost.

[0036] Based on this embodiment, the two magnet fixing frames 31 are movably connected to the upper cover 1 via a bearing 33 .

[0037] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A linear sonic oscillating motor, characterized in that: It comprises an upper cover (1), a lower cover (2), a rotor assembly (3) and a stator assembly (4); The rotor assembly (3) comprises two correspondingly arranged magnet fixing frames (31), the ends of the two magnet fixing frames (31) are connected to an outer shaft (32), the ends of the two magnet fixing frames (31) close to the outer shaft (32) are provided with bearings (33), a spring sheet (34) is embedded between the two magnet fixing frames (31), one end of the spring sheet (34) is plugged and fixed to the outer shaft (32), and the end of the spring sheet (34) is positioned between the two magnet fixing frames (31) through the two mutually plugged magnet fixing frames (31). 1), the other end of the spring sheet (34) is fixed to the lower cover (2), a plurality of magnets (35) having the same magnetizing direction are provided through the magnet fixing frame (31), the distribution direction of the plurality of magnets (35) is perpendicular to the distribution direction of the two magnet fixing frames (31), and the outer end surface of the magnet fixing frame (31) has a magnetic conductive plate (36); under the magnetic force of the stator assembly (4), the rotor assembly (3) reciprocates with the circumferential rotation of the bearing (33) and the flexible deformation of the spring sheet (34).

2. A linear acoustic wave oscillating motor according to claim 1, characterized in that: The end of the outer shaft (32) close to the spring sheet (34) has a notch (37) for accommodating the spring sheet (34) to be inserted, and the end of the spring sheet (34) close to the outer shaft (32) has insertion holes (38) on both sides, and the upper ends of the two magnet fixing frames (31) have upper plugging columns (39) staggered and inserted into the two plugging holes (38), and the upper ends of the two magnet fixing frames (31) have upper positioning holes (310) for the corresponding upper plugging columns (39) to be inserted through, and the lower ends of the two magnet fixing frames (31) have two groups of lower plugging columns (311) and lower positioning holes (312) that are plugged into each other.

3. A linear acoustic wave oscillating motor according to claim 2, characterized in that: The stator assembly (4) comprises a magnetic conductor (41), a U-shaped coil frame (42), and a coil (43) wound around the middle of the magnetic conductor (41); the U-shaped coil frame (42) encloses the rotor assembly (3); and a magnetic conductor plate (36) is arranged corresponding to the coil (43).

4. A linear acoustic wave oscillating motor according to claim 3, characterized in that: The U-shaped coil frame (42) and the magnetic conductor (41) are combined and fixed by means of integral injection molding or embedding and then gluing.

5. A linear acoustic wave oscillating motor according to claim 4, characterized in that: The upper and lower sides of the U-shaped coil frame (42) are both provided with bosses (44); the upper cover (1) and the lower cover (2) are both provided with limiting holes (5) corresponding to the bosses (44); the limiting holes (5) are transitionally matched with the bosses (44).

6. A linear acoustic wave oscillating motor according to claim 5, characterized in that: The two magnet fixing frames (31) are movably connected to the upper cover (1) via a bearing (33).

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